Whistle-actuating iv



4 Shets-Sheet 1,

' (No Model.)

BYMER. WHISTLE AOTUA TING MECHANISM.

PatentedApr. 16, 1889.

Inverfior W y .wn wa (No Model.) 4 Sheets-Sheet 2L W. RYMER.

WHISTLE AGTUATING MECHANISM.

Patented Apr. 16, 1889.

(No Model.) 4 Sheets-Sheet 3..

W. RYMER. WHISTLE AGTUATING MECHANISM- A A .fll H x j I A T T A all,

Witnesses. WQM:

4 Sheets-Sheet 4. I

(No Model.)

W. RYMER. WHISTLE AGTUATING MEGHANISM- No. 401,377. Patented Apr. 16, 1889.

H Fi g8 I I i f 6 2 mnwliliik a I I I Invemor.

I @ZWZWWQZ-M W N. PETERS. vnuwumo n' mr. Wn'nhi mmmmmm c.

UNITED STATES ATENT Fries.

"WILLIAM RYMER, OF DETROIT, MICHIGAN.

WHlSTLE-ACTUATING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 401,377, dated April 16, 1889.

Application filed October 29, 1888- Serial No. 289,375. (No model.)

To all 107107 it 772/051] concern.-

Be it known that I, WILLIAM RYMER, a citizen of the United States, residing at Detroit, county of WVayne, State of Michigan, have invented a certain new and useful Improvement in \Vhistle-Actuating Mechanism; and I declare the following to be a full, clear,

and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My present invention is designed to provide a new and useful improvement in a device for automatically sounding a whistle, and has for its objects more particularl certain improvements in an apparatus for this purpose embodied in a pending application filed by me January 10, 1888, Serial No. 260,335. -In my present case I have shown and described the construction covered by claims 1, 11, 13, 15, 16, 19, and '20 of my application above referred to, and do not specifically claim the same herein.

I contemplate herein a material simplification of the mechanism required to automatically sound the whistle and regulate the signal according to the requirements in any given case, the greater simplicity being obtained by a less number of parts and certain modifications of the apparatus, resulting in less friction, increased efficiency, and greater economy of construction.

My invention therefore consists of certain combinations of devices and appliances illustrated in the drawings submitted herewith and more fully hereinafter described, and pointed out in the claims.

In the drawings, Figure 1 is a front elevation of mechanism embodying my invention. Fig. 2 is a horizontal section of the cam-cylinder along the line a: m, Fig. 1, and showing a portion of the rotary mechanism in plan. Fig. 3 is a side elevation illustrating my invention; and Fig. 4 is a front elevation showing my device in place upon alocomotive-boiler, a portion of the cab being in section. Fig. 5 is a vertical section illustrative of a modification of my invention, showing the cam at the lower limit of its movement. Fig. 6 is a similar view showing the cam raised. Fig. 7 is a cross-section on the line at m, Fig. 5; and Fig.

8 is a front elevation showing the modification in place and with parts in section.

I carry out my invention as follows as applied to a locomotive:

A represents the boiler; A, the cab; A the drive-wheels; A the rails; A, the whistle mechanism, of any desired construction.

13 is any suitable rotary mechanism, as described in my former application above referred to, or such, for example, as that for a rotary pump shown and described in Letters Patent No. 12,350, ranted to Holley February 6, 1855. In the present instance two rotatable toothed pistons, F L23, of variable diameters are arranged to intermesh, and are driven by a supply of steam or compressed air, the same medium as that which blows the whistle.

G is an inlet-pipe for the power-supply, as of steam or compressed air. This pipe communicates with the rotary mechanism through a pipe, 0', united therewith. The supplypipe O is provided with a regulating-valve, c, and an operating-valve, c whereby the admission of the powersupply may be controlled.

D D represent a jointed bar engaged, as shown herein, with an interveningbell-crank, (Z, which may be secured upon the front of the cab, as shown in Fig. 4. One portion of said bar is engaged with the operating-valve and the other extends downward to the track, being preferably provided at the foot with an anti-friction roller, cl, to ride over a bar, E, to move the operating-bar D D and open the valve 0' to admit power to the rotary mechanism. F is a cam-cylinder driven by said rotary mechanism, and is provided with any suitable locking deviceas, for instance, a locking-arm, F. essentially, of the same constructions and relations of parts as those shown and described in my said application.

7 Although I prefer in this instance to connect the bar D with the valve 0 by an intervening crank arm, 0 I prefer also to slightly modify the gear by which power is communicated from the rotary mechanism, if employed, to the cam-cylinder. To this end herein the pinion Z1, driven by the rotary mechanism, and the cam-cylinder are provided with an intermediate gear, B, provided. in turn with a pinion, b meshing with the cam-cylinder.

These features may consist,

This intermediate gear adds to the power and drives the cylinder more slowly, giving a longer blast of the whistle. I prefer also to construct the cam-cylinder, where a cylindrical cam is employed, with a cam-face, as shown, instead of with a cam-groove. I do not, however, confine myself to either construction of the cam-cylinder, as the said cylinder, if its use is preferred, might be constructed with a cam-shaped periphery instead. So, too, the cylinder may be recessed, as at f, Fig. 2, to receive the end of the locking-arm.

G is any suitable bracket or support for the rotary mechanism and cam-cylinder.

H is a whistle-actuatin g lever, engaged with the whistle mechanism in any desired man-- neras, for instance, with the usual rockshaft, H, to which the usual hand-lever, H is attached. The lever H being thus engaged to the rock-shaft, it will be seen that the whistle may be actuated automatically or at will in a ready manner. The opposite end of said actuating-lever H, as shown in Figs. 1, 3, and 4, is engaged to ride upon the cam-cylinder and to be thrown to and fro thereby. This operation of the actuating-lever will open and close the whistle mechanism and control the blast, the cam-cylinder being constriucted to conform the whistle-blast to the e.

It will be seen that in the mechanism hereinbefore described I omit altogether the piston-cylinders and their pistons intervening between the cam-cylinder and the whistle mechanism embodied in the former application referred to, and that I lead the actuating-lever I-I direct to the cam-cylinder at one end and to the whistle mechanism at the other end. My invention, however, is not limited to the rotary cam for operating the whistleactuating lever, as a vertically-movable cam would serve the same purpose. I have accordingly shown a vertically-movable cam to operate said lever in Figs. 5, 6, 7, and 8. Nor is my invention limited to a rotary mechanism for driving the cam. Where a verticallymovable cam is employed particularly, other driving means may be employed. In this instance F is a vertically-movable cam constructed to ride upward adjacent to the lower end of the actuating-lever.

I is a piston-cylinder, and I the piston carrying said cam F The supply-pipe 0 coinmunicates with said cylinder, the controllingvalve in this case being preferably a threeway cock, the arm of which may extend above and below the pipe, the upper end being provided with a crank-arm, c and a trippingbar, a, terminating within the upper end of the cylinder, so as to be operated by the ascending piston. It will thus be seen that when the bar D is thrust in the proper direction the steam will be admitted to the cylinder, and that when the piston has reached the proper limit of its stroke the valve will be thrown to cut off the steam and permit the cylinder to exhaust.

The cylinder may be provided with suitable guides, i, for the piston.

The base of the cam is preferably cut at an angle, as shown at f. The stem of the piston is cut away, as shown at i, for the base of the cam. To the rear of the cam the piston is cut away, as at 21 to permit the retraction of the cam in its descending movement, as shown in Fig. 6. At the upper end the cam is provided with a guide-flange, 1' projecting outward.

It will be evident that when the cam ascends the actuating-lever II will be operated, and

that in order to prevent said lever being also actuated upon the descent of the cam the cam must be freed to move away from the lever. Thus, for instance, the signal required from a locomotive-whistle at a highway-crossing is two long blasts and two short ones. If these signals were given on the upward movement of the cam, the downward movement thereof would repeat the signals in reverse order unless the cam were allowed to retract upon its descent.

By cutting away the piston at the rear of the cam, as shown, the cam,when off its seat, will be permitted to move back from the actuating-lever.

It is to be remembered that a pressure is constantly exerted upon the said lever, in consequence of which the cam will be readily forced rearward when free to move.

As the steam exhausts beneath the piston, it will at once drop away from the cam, un-

seating the cam, which will readily thus be moved rearward until, striking its angular seat,it will find its normal place and be ready for action.

The piston may be provided with a spring, I which, striking against the flanges or guides i, will cushion the piston and give it an impulse to descend when the steam is cut off.

What I claim is 1. In combination, the whistle, the whistleactuating lever, a movable cam to operate the lever, a power-supply pipe to communicate power to drive the cam, said pipe provided with a controlling-valve, and automatic tripping mechanism to throw the said valve, substantially as set forth.

2. In combination, the whistle, the whistleactuating lever, a movable cam to operate the lever, a power-supply pipe to communicate power to drive the cam, said pipe provided with a controlling-valve, and a reciprocatory tripping-bar to throw said valve, substantially as set forth.

3. In combination, the whistle, the whistleactuating lever, a movable cam to operate the lever, a power-supply pipe provided with a controlling-valve to communicate power to drive the cam, and tripping mechanism to throw said valve, substantially as set forth.

4. In combination, the whistle, the whistleactuating lever, a rotary cam, rotary mechanism to actuate the cam, and a power-supply pipe communicating with the rotary mechanism provided with a controlling-valve, substantially as set forth.

5. In combination, the Whistle, the whistleactnating lever, a rotary cam, rota-r Y mechanism to operate said cam, a power-supply pipe communicating with said rotary mechanism, said pipe provided with a controlling-valve, and a reciprocatory bar engaged with said valve, substantially as set forth.

6. In combination, a whistle, an actuatinglever, a rotary mechanism, a cylinder provided with a cam driven by said rotary mechanism to actuate said lever, and an inlet-pipe to admit the power-supply to the rotary mechanism, said pipe provided with a controllingvalve, substantially as set 'forth.

7. In combination, the whistle, the rotary cam, a lever connecting the whistle with said cam,rotary mechanism to drive said cam, and an inlet-pipe communicating with the rotary mechanism, said pipe provided with a regulating-valve and a controlling-valve, substantially as set forth.

8. In combination, the Whistle, the rotary cam, a Whistle-actuating lever connecting the whistle with said rotary cam, and a locking device, substantially as set forth.

9. In combination, a rotary mechanism pro 

